One interesting thread. It can help. You can also ask @trickydickie, @Jason, …who have similar systems.
I don’t if Superlumina make Snaic cables to perform vs the standard.
As has been said above, the Din to XLR comes with the 250 as standard. You can get an SL version as an upgrade. But, and I’ve said this before, get a 555PS and a really good stand before worrying about wires.
The OP worries about wires because he will purchase new components : 282/ supercap / 250 dr/ 555dr to power his nds.
So he wants to know which cables he needs and if they come with the boxes.
For clarity, a SNAIC does not connect a SuperCap to a 250. SNAICs are proprietary combined signal and power cables that go between a power supply and what it is powering.
For the SuperCap to 250, the OP needs a 4-pin DIN to 3-pin XLR interconnect and the 250 comes with one in the box.
However, if buying new, the OP will need two 5-pin SNAIC leads to connect the SuperCap to the 282. Those are not included and are sold separately.
There is no direct connection from a 202/282,252,552 to any power amp.
SuperCap powers the preamp via a SNAIC (2 in the case of the 282, or burndy in the case of 252) and signal comes back to the SuperCap via the same cable (power in one direction, signal in the other). Then the Supercap connects signal only via an interconnect (not a SNAIC) to a power amp.
A preamp’s power supply also has the signal reference earth, hence the signal goes via the SuperCap in this case.
This creates the oddity that Naim preamps don’t actually have any obvious pre-out connection.